import java.util.Scanner;
//class Test {
//    public static void hello() {
//        System.out.println("hello");
//    }
//}

class Data {

    private int x;
    private int y;

    public Data(int x, int y) {
        this.x = x;
        this.y = y;
    }

    public int getX() {
        return this.x;
    }

    public int getY() {
        return this.y;
    }

}

public class test {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNextInt()) {
            int x = scanner.nextInt();
            int y = scanner.nextInt();
            Data data = new Data(x, y);
            System.out.println(data.getX() + data.getY());
        }

    }


//    public static void main1(String[] args) {
////        Test test=null;
////        test.hello();
//    }
}
